The official name for this resolution is by the way uhd but the term 4k is often used as well although in the movie industry this implies a resolution of 4096 x 2160.
													
																	Displayport video wall. 
									
	
		
	
																	Intel cpus with hd graphics are limited to 3 external monitors altogether. 
																	Today s most common version for video wall displays displayport 1 2 supports video resolutions of up to 3840 x 2160 pixels at a refresh rate of 60 hz. 
																	Amd radeon with amd eyefinity required for video wall mode. 
																	Compatibility with older graphics cards not guaranteed. 
															
													
									
	
		
	
																	Computer with displayport 1 2 compatible graphics card e g. 
																	Video wall mode requires either a amd infinity intel or nvidia surround technology graphics adapter.